CUED Publications database

Dynamic control of the brushless doubly fed induction generator under unbalanced operation

Shao, S and Long, T and Abdi, E and McMahon, RA Dynamic control of the brushless doubly fed induction generator under unbalanced operation. IEEE Transactions on Industrial Electronics. (Unpublished)

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Abstract

The brushless doubly fed induction generator (DFIG) (BDFIG) shows commercial promise for wind power generation because of its lower maintenance needs compared to the widely used DFIG. From power grid codes, installed wind turbines are sometimes required to be capable of operating under unbalanced grid conditions. This paper presents a novel controller for BDFIG-based wind generators operated with asymmetrical voltage supplies. Two synchronous reference frames, the positive and the negative, are introduced for applying a vector control scheme to separately control two sequences arising from the unbalanced voltage. Different control strategies are discussed for reducing the consequent oscillations. It is demonstrated that the proposed controller shows a significant performance improvement over the conventional controller and is effective to cope with potentially unbalanced conditions.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Electronics, Power & Energy Conversion
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:24
Last Modified: 19 Apr 2018 02:46
DOI: